gel precipitin test

例句：

1. 1. The doctor performed a gel precipitation teston the patient's blood sample.
   医生对患者的血样进行了凝胶沉淀试验。
2. 2.The results of the gel precipitation test wereinconclusive.
   凝胶沉淀试验的结果不明确。
3. 3. The gel precipitation test is usedto detect the presence of antibodies in theblood.
   凝胶沉淀试验用于检测血液中的抗体。